Measuring and dispensing instrument



Nav, 25, 1924.

E. E. WISE MEASURING AND DISPENSING- INSTRUMENT Filed Anril 4,

\ .E I lll ndrinnnn. nl: 2

oma

nl m

num

Patented Nov. 25, 1924.

UNITED STATES ERNEST E. WISE OF OMAHA, NEBRASIIA.

MEASUR-ING AND DSENSING- ENSTBUMENT.

Application led April 4, i924.

To ZZ fio/om may concern:

Be it known that I, ERNEST E. 71st, a citizen ot the United States, residing at Omaha, in the county ot Douglas and State of Nebraska, have invented 'certain new and useful improvements in a Measuring and Dispensing l'nstri'unent, ot' which the following is a specilication.

rlhis invention relates to a measuring and dispensing` device particularly useful in the practice of dentistry, and has for its object to provide an instrument which will consist of few and simple parts, will be convenient in use and may be readily adjusted for dis-- 'pensing ingredients Yin greater or lesser quantities, said ingredients when dispensed being uniform in pro-portions.

lVith the 'toregoingobjects in view the invention presents a novel and useful const-ruction, combination and arrangement ot' parts as described herein and claimed, and as illustrated in the accompanying drawing, it being understood that changes in torni, size, proportion and minor details may be urade, as found to be of advantage, said changes to be determined by the scope ot the invention as claimed. y

In the drawing, Fig. 1 is a view of the device in longitudinal section, the plunger bev ing extended. Fig. 2 is a side View or 'a plunger or carrier. Fig. 3 is a nlan view lshowing the plunger disposed in a tubular casing` and partly in section, thel casing being in longitudinal section. Fig. t is an end View of a disc, operating as a dial and handle for the plunger. Fig. 5 is a sectional view on line 55 of Fig. 3. Fig. 6 is. a sectional view on line 6-6 of Fig. 2. Fig. 7 is a broken away sectional view showing the normal position for the plunger within the tubular casing. Fig. 8 is a view partly in longitudinal section to illustrate adjustacle features of the invention.

Referring now to the drawing for a more Serial No. 704,283.

rlhe screw-rod is disposed in the apertures ot the cylindrical sections, the sections 15 and 1G being adapted to have a limited longitudinal movement in the casing when the rod 17, by use ot the disc, is rotated, parts ot said sections 15 and 16 being interior-ly threaded to be engaged by the threaded parts 0l and c ci the screw-rod, as shown in the drawing, and it will be understood that since the screw-rod is provided with detents or collars 19 and 2O which are disposed in the ends oft the section 13, said section 13 will be prevented trom moving longitudinally of said rod when the latter is rotated, and the section 14e will be prevented from such longitudinal niovement since the rod is provided with a. detent or collar 21 and a proiection said collars 21, 19 and 2O bee ing disposed in trieplanes ot the, sections and not operating to prevent a free rotation oi said rod.

Numcrals and 24 indicate spillways or discharge ports ttor the casing., the port 24.- being wn'ipafrratively near to the port b of the receptacle 1l., and the port 23 being comparatively remote 'from thcA port a ci the receptacle 10.

rihat part indicated at c or' the scre\\'1;'od is finely threaded and the part d ci said rod is coars-:ely tlueaded. Any rotatable movement ott the sections or any ot them, which otherwise might occur when the screwrod is rotated, will be prevented since said sections are proif'ided with grooves 25 lin which lugs 26 ci the casing engage. Numeral 2T indicates a spring, its normal retracted position being shown in Fig. 7 ot the drawing.

fils described, chambers may be formed in the casing, as the cliainl'ier 28 between the ends ct the sections 15% and 1V; and the area and "volume ot this chamber in ybe in creased or dii'ninished, as likewise may the chamber 29 which is disposed between the ends of the sections 11i and 16, the proportion of the-se chambers as to ing the same, and an operator may cause, it so desired, the normally adjacent ends of the sections mentioned to move into contact. It it is desired that the volume of the cham bers be increased, the disc may be rotated in one direction tor that purpose, and a rot-af tion of the disc and screw-rod in an opposite direction will cause a decrease in the volume of the chambers.

As iirst stated., thc instrument is particularly of advantage for the use' of dentists when measuring ingredients in the Ytorination of alloys of mercury with certain kinds of metals, the alloy being hard or so'l't according to the proportion ot mercury used; and by use of the device the ingredients will not become wasted, as they Otten are by assuming and using improper proportions7 the use of the device also operating as a saving of time ott an operatcr.

In operation, the parts being disposed as shown in Fig. 7. the volume of the chambers may be reduced by rotating the screw-rod and its disc. -so that said chambers will each contain a limited quantity of the ingredients, the receptacle ll being adapted to contain mercury and the receptacle lO being adapted to contain another metal or metals in powdered form, such as silverI or the like. Y The plunger l2 may then be drawn outwardly to permitthe chambezs 28 and 29 to communicate with the exits a and b of the respective receptacles 10 and 1l, said chamber 29 beilled with mercury and the chamber 2K8 V,being filled with said other metal or amalgam.

The operator then permits the plunger to slide inwardly of the casing by operation of the spring, the mercury being moved and discharged `in the spillway 24 before the amalgam in chamber 28 is discharged in the spillwayV 23, the ingredients which will be relceived in the container 30, by the operation described, being of suitable proportions for v` jthe reason that the volumes or containing capacity forl the chambers 28 and 29 had been predetermined.

Tt will be understood, of course, that the degree of inclination tor the threads or the parts cl and c of the screw-rod 17 will determineY the proportion of parts for the alloy, the volumes tor the respective chambers 28 and 29 being valso arranged, the proportions for the ingredients dispensed being the same whether a large or very limited supply is re.-

uired. However. it is sometimes-desired to` add an additional quantity of mercury to the alloy, and since the distance between the port 24; and the port Z is less than the distance between the port 23 and the port a, an additional quantity of mercury maybe delivered lto the container 30 trom the receptacle ll without the delivery thereto of any ot the contents of the receptacle 10, and it will be `seen thatin Vsuch an instance the delivery ot sfu'ch uuantity of'mercury may be under control often operator by rotating the screw-rod.

Numeral 31 indica-tes a constricted'part "of the hollew standard 32 which communicates with the ports 23 and 24, said vpart 31 being armatter ot convenience to facilitate a Vdethe respective'ports b and e of the receptacles.

l claim my invention,--v

l. ln a measuring and dispensing'instrument, a casing provided with intake ports and discharge ports, a plunger slidingly mounted in the casing and including blocks,

a rotatable screw-rod traversing the Vplunger and having threaded connections'for moving the blocks longitudinally of the lplunger to provide chambers in communication with the intake ports of the casing, said plunger beingV movable to dispose said chambersrin communication with the 'discharge ports of the casing, the threaded connection of the screwrod with said blocks bein@ such that when the screw-rod is rotated one block will move at a speed greater than another block for changing the relative volumes of' said chambers. i i

2. In a measuring and dispensing instrument, a casing provided with intake ports and discharge ports, a plunger slidingly mounted in the casing andincluding a pair of apertured blocks and adapted to be moved longitudinally of the casing toprovide chambers communicating with the intake ports of' the casing, resilient means for moving the 'Y plunger to dispose the chambers in communication with the discharge ports of the casing, and a screw-rod disposed in the apertures of the blocks7 said screw-rod being revoluble for simultaneously moving` saidV blocks at different speeds `for causing a change in volume of one chamber ascompared with the volume et another chamber. Y

In testimony whereof, Ihave aiiixed my signature in presence of two witnesses.

l .ERNEST E, Witnesses HIRAM A. S'runens, ARTHUR H. S'runens. 

